Effects of crosslinking agent on rheological properties of poly(lactic acid) and cellular structure of its microcellular foams

ZHANG Jingjing; HUANG Hanxiong; HUANG Gengqun

doi:10.11949/j.issn.0438-1157.20150180

您当前的位置：

首页 >

文章列表页 >

Effects of crosslinking agent on rheological properties of poly(lactic acid) and cellular structure of its microcellular foams

更新时间：2025-12-10

- Effects of crosslinking agent on rheological properties of poly(lactic acid) and cellular structure of its microcellular foams
- CIESC Journal Issue 10, Pages: 4252-4257(2015)
- 作者机构：
  
  华南理工大学塑料橡胶装备及智能化研究中心,广东,广州,510640
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150180
  CLC： Q321.5
- Online First：05 October 2015，
  
  Published：05 October 2015
- 稿件说明：
移动端阅览
ZHANG Jingjing, HUANG Hanxiong, HUANG Gengqun. Effects of crosslinking agent on rheological properties of poly(lactic acid) and cellular structure of its microcellular foams[J]. CIESC Journal, 2015, (10): 4252-4257.
DOI：

ZHANG Jingjing, HUANG Hanxiong, HUANG Gengqun. Effects of crosslinking agent on rheological properties of poly(lactic acid) and cellular structure of its microcellular foams[J]. CIESC Journal, 2015, (10): 4252-4257. DOI： 10.11949/j.issn.0438-1157.20150180.

摘要

在研究交联剂对聚乳酸(PLA)流变性能影响的基础上

采用间歇发泡方法研究交联PLA发泡材料的泡孔结构。结果表明

交联剂可提高低频区PLA的损耗角正切和复数黏度以及PLA的熔体强度和拉伸黏度。交联PLA的复数黏度高

使泡孔长大初期的长大速率较低;泡孔长大后期泡孔壁被拉伸时

熔体强度和拉伸黏度的急剧提高使泡孔壁强度增加而不会被撕裂

大大减小泡孔的合并

形成较均匀且较规则的泡孔结构。交联PLA高的熔体强度可明显减少发泡时二氧化碳扩散至空气中的量

从而增加PLA发泡样品的体积膨胀率;加入0.4 phr的交联剂时

样品的体积膨胀率最大(达41)。

Abstract

Based on the effects of crosslinking agent on the rheological properties of polylactic acid (PLA)

the cellular structure of crosslinked PLA foams was investigated via batch foaming. The results showed that when adding the crosslinking agent to the PLA

its loss tangent and complex viscosity in low frequency region and its melt strength and extensional viscosity increased. In the initial cell growth stage

the cell wall was stretched

which dramatically increased the high complex viscosity of the crosslinked PLA slowed down the cell growth rate. In the later cell growth stage

the melt strength and extensional viscosity and so increased the strength of the cell wall. Then

cell coalescence was abviously reduced and the cellular structure of the crosslinked PLA foam samples was more regular and uniform. The amount of gas loss decreased because of the high melt strength of the crosslinked PLA

which resulted in an increased expansion ratio of the PLA foam samples. The PLA foam had a maximum volume expansion ratio of 41 when adding 0.4 phr crosslinking agent.

关键词

Keywords

references

Views

460

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Microcellular thermoplastic polyurethane with gradient structure and its properties

Effect of different metal salt demulsifiers on vulcanization behavior of isobutylene isoprene rubber

Effect of divinylbenzene-assisted maleic anhydride grafted poly(lactic acid) on properties of microcrystalline cellulose/poly(lactic acid) composites

Performance analysis and application of thermal and humidity control system cascade driven by waste heat

Recent advances in machine learning for modeling and control of crystallization processes

Related Author

CHEN Yichong

JIA Xingyu

ZHONG Wenyu

SHI Yuhui

PENG Yao

SUN Jiayang

HU Dongdong

ZHAO Ling

Related Institution

State Key Laboratory of Chemical Engineering, East China University of Science and Technology

Shanghai Electronic Chemicals Innovation Institute, East China University of Science and Technology

State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University

Institute of Zhejiang University-Quzhou

Department of Polymer Science and Engineering, Zhejiang University

⁰